CN204009010U - A kind of generator excitation intelligent online monitoring diagnosis device - Google Patents
A kind of generator excitation intelligent online monitoring diagnosis device Download PDFInfo
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- CN204009010U CN204009010U CN201420418424.5U CN201420418424U CN204009010U CN 204009010 U CN204009010 U CN 204009010U CN 201420418424 U CN201420418424 U CN 201420418424U CN 204009010 U CN204009010 U CN 204009010U
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- 230000005284 excitation Effects 0.000 title claims abstract description 55
- 238000012544 monitoring process Methods 0.000 title claims abstract description 42
- 238000003745 diagnosis Methods 0.000 title claims abstract description 13
- 230000005347 demagnetization Effects 0.000 claims abstract description 18
- 239000013307 optical fiber Substances 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
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Abstract
The utility model provides a kind of generator excitation intelligent online monitoring diagnosis device, comprise intelligent diagnostics supervisor, Online Monitoring Control device, power cabinet collecting unit, demagnetization cabinet collecting unit and man-machine interface, it is characterized in that: Online Monitoring Control device is connected with demagnetization cabinet collecting unit with power cabinet collecting unit by optical fiber, Real-time Collection power cabinet and demagnetization cabinet data; Online Monitoring Control device is connected with two control channels of excitation controller, Real-time Collection excitation controller internal data; Intelligent diagnostics supervisor is connected with Online Monitoring Control device, receives the data that online monitor controller gathers; Man-machine interface is connected on intelligent diagnostics supervisor, shows in real time diagnostic result, realizes excitation unit fault pre-diagnosing and intelligence location, improves the safe reliability of excitation system.
Description
Technical field
The utility model relates to synchronous generator excited system, specifically a kind of generator excitation intelligent online monitoring diagnosis device.
Background technology
Excitation system is one of crucial opertaing device of generator, plays a part to maintain generator voltage, regulates electric network reactive-load, improves stability of power system, and its reliability directly affects the normal operation of generator.Excitation unit is generally comprised of excitation controller, power cabinet, demagnetization cabinet three parts.Excitation controller is control module, regulates control, and give power cabinet by the controlled quentity controlled variable of generation according to given and deviation actual measurement.Power cabinet is performance element, according to controlled quentity controlled variable regulation output exciting current.Demagnetization cabinet is protected location, fast shut-off exciting current under failure condition, protection generator.
Excitation unit extensively adopts state type controllable silicon three-phase full-controlled rectifier bridge, and each control cycle is 20ms, and the logout time cycle of Power Station Monitored Control System is 1s conventionally, and the data of record are also limited, cannot provide more detailed data and information for fault analysis.Plant protection system can only record external physical amount, there is no excitation controller internal data, the duty of excitation controller while can not reflection accident occurring.And the excitation controller lower fault of self that conventionally cannot correctly judge of nonserviceabling accurately brings very large difficulty in location to analysis on accident cause and fault.
Utility model content
The utility model provides a kind of generator excitation intelligent online monitoring diagnosis device according to the deficiencies in the prior art, realizes excitation unit fault pre-diagnosing and intelligence location, improves the safe reliability of excitation system.
The technical solution of the utility model: a kind of generator excitation intelligent online monitoring diagnosis device, comprise intelligent diagnostics supervisor, Online Monitoring Control device, power cabinet collecting unit, demagnetization cabinet collecting unit and man-machine interface, it is characterized in that: Online Monitoring Control device is connected with demagnetization cabinet collecting unit with power cabinet collecting unit by optical fiber, Real-time Collection power cabinet and demagnetization cabinet data; Online Monitoring Control device is connected with two control channels of excitation controller, Real-time Collection excitation controller internal data; Intelligent diagnostics supervisor is connected with Online Monitoring Control device, receives the data that online monitor controller gathers; Man-machine interface is connected on intelligent diagnostics supervisor, shows in real time diagnostic result.
Two control channels of described Online Monitoring Control device and excitation controller are connected by optical fiber or Ethernet or CAN bus.
Described intelligent diagnostics supervisor is connected by Ethernet with Online Monitoring Control device.
Described Online Monitoring Control device possesses the multiple communication interfaces such as optical fiber, Ethernet and CAN bus, and compatible to IEC 61850 agreements.
Technique effect of the present utility model: Online Monitoring Control device is by optical fiber and each link data of Ethernet Real-time Collection excitation unit, the data that intelligent diagnostics supervisor gathers according to Online Monitoring Control device, by checking calculation, trend analysis, the historical data means such as relatively, the duty of prediction and diagnosis excitation unit links, and show diagnostic result by man-machine interface, location position of failure point, processing scheme is provided, thereby realize excitation unit fault pre-diagnosing and intelligence location, improve the safe reliability of excitation system.
Accompanying drawing explanation
Fig. 1 is principle of the invention block diagram.
Number in the figure represents respectively: 1-intelligent diagnostics supervisor, 2-Online Monitoring Control device, 3-power cabinet collecting unit, 4-demagnetization cabinet collecting unit, 5-man-machine interface, 6-excitation controller.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described:
As shown in Figure 1, a kind of generator excitation intelligent online monitoring diagnosis device, comprise intelligent diagnostics supervisor 1, Online Monitoring Control device 2, power cabinet collecting unit 3, demagnetization cabinet collecting unit 4 and man-machine interface 5, it is characterized in that: Online Monitoring Control device 2 is connected with demagnetization cabinet collecting unit 4 with power cabinet collecting unit 3 by optical fiber, Real-time Collection power cabinet and demagnetization cabinet data; Online Monitoring Control device 2 is connected with two control channels of excitation controller 6, Real-time Collection excitation controller 6 internal datas; Intelligent diagnostics supervisor 1 is connected with Online Monitoring Control device 2, receives the data that online monitor controller 2 gathers; Man-machine interface 5 is connected on intelligent diagnostics supervisor 1, shows in real time diagnostic result.
Two control channels of Online Monitoring Control device 2 and excitation controller 6 are connected by optical fiber or Ethernet or CAN bus.
Intelligent diagnostics supervisor 1 is connected by Ethernet with Online Monitoring Control device 2.
The transfer rate of optical fiber, Ethernet and CAN bus is all at 500Kb
pmore than s, can meet the requirement of the data transmission of control cycle 20ms.
Online Monitoring Control device possesses 4 Ethernet interfaces, 2 CAN communication ports, the 18 pairs of optical fiber interfaces and 2 RS232 communication ports and 1 RS485 communication port, and compatible to IEC 61850 agreements, internal data that can each control cycle excitation controller of Real-time Collection, comprises all measured values of excitation controller, adjustment of field excitation control module set-point, each link output valve of PID unit, each link output valve of PSS unit, each limiting unit output valve, excitation is controlled output valve, the controlled quentity controlled variables such as trigger angle, the and (start of outside input command, shut down, increase magnetic, demagnetize, drop into PSS, grid-connected, 95% tach signal etc.), external output state amount (fault-signal, restricting signal, alarm signal, automatically operation, manually operation, master slave mode, PSS operation, working power state etc.), bosom quantity of state (regulator duty, regulator working method, master-slave communication state, Auxiliary Control Element duty, limiter duty, its cover regulator duty etc.) control information such as.
Power cabinet collecting unit possesses 32 road IO, 16 tunnel high-speed AD, 4 road high-speed frequency measurements, can each control cycle power cabinet AC input voltage of Real-time Collection, input current, silicon controlled rectifier leg electric current, VD, output current, intake air temperature, air outlet temperature, radiator temperature, molten status signal, blower fan start-stop signal, arteries and veins discharge source duty constant power cabinet service data soon.
Demagnetization cabinet collecting unit possesses 32 road IO, 16 tunnel high-speed AD, 4 road high-speed frequency measurements, can each control cycle demagnetization cabinet field voltage of Real-time Collection, the demagnetization cabinet service data such as exciting current, excitation voltage, excitation electric current, drop-out voltage, each branch current of de-excitation resistance, degaussing switch deciliter state, excitation contactor deciliter state, trip protection order, normal divide-shut brake order, rotor over-voltage protection actuating signal, excitation power work state, tripping operation power work state.
Intelligent diagnostics supervisor adopts 4 core CPU, 2.4GHz dominant frequency, and 2GB internal memory, 8TB hard disk, possesses high-speed computation ability, and can store the magnanimity informations such as the data of Real-time Collection, typical data over the years, all previous failure wave-recording.Checking calculation is carried out in the input and output of the links such as measurement sampling, the control by each control cycle of excitation unit to Real-time Collection is calculated, running status judges, limiting protecting is thrown and moved back, controlled quentity controlled variable output, and whether the work of verification excitation unit links is correct; By the data of links are carried out to trend analysis, and compare with historical data, judge that whether excitation unit links performance changes, and predicts contingent fault; By the fault recorder data to links, analyze, accurately locate trouble spot.
Man-machine interface adopts technical grade liquid crystal touch screen, can inquire about data and the failure wave-recording of collection, shows diagnostic result, and location position of failure point, provides processing scheme.
Generator excitation intelligent online monitoring diagnosis device, by the Collection and analysis to excitation data, is realized excitation unit fault pre-diagnosing and intelligence location, improves the safe reliability of excitation system.
Application example one:
Excitation controller output Trigger Angle α 1, the power cabinet AC input voltage Uac that intelligent diagnostics supervisor 1 is collected according to Online Monitoring Control device 2 and the data of VD Ud, according to rectification formula:
Ud＝1.35·Uac·cosα
Can calculate actual Trigger Angle α, contrast excitation controller output Trigger Angle α 1, can obtain the phase shifting angle Δ α that rectifier bridge simultaneous phase-shifting loop exists:
Δα＝α－α1
Verification Δ α, in error allowed band, illustrates that simultaneous phase-shifting loop works is normal; Contrast Δ α historical data analysis variation tendency, if Δ α is scaled to divergent trend, illustrates that simultaneous phase-shifting loop characteristic degenerates, and may cause rectification output fault.
Application example two:
The data of field voltage Ufd, exciting current Ifd, drop-out voltage Ur during demagnetization that intelligent diagnostics supervisor 1 is collected according to Online Monitoring Control device 2, can calculate degaussing switch arc voltage Uk:
Uk＝Ufd+Ur
Contrast degaussing switch arc voltage Uk historical data and variation tendency in identical field voltage Ufd, exciting current Ifd situation, can judge whether degaussing switch upbuild voltage capacity weakens, whether degaussing switch needs is safeguarded or changes.
Claims (4)
1. a generator excitation intelligent online monitoring diagnosis device, comprise intelligent diagnostics supervisor (1), Online Monitoring Control device (2), power cabinet collecting unit (3), demagnetization cabinet collecting unit (4) and man-machine interface (5), it is characterized in that: Online Monitoring Control device (2) is connected with demagnetization cabinet collecting unit (4) with power cabinet collecting unit (3) by optical fiber, Real-time Collection power cabinet and demagnetization cabinet data; Online Monitoring Control device (2) is connected with two control channels of excitation controller (6), Real-time Collection excitation controller (6) internal data; Intelligent diagnostics supervisor (1) is connected with Online Monitoring Control device (2), receives the data that online monitor controller (2) gathers; It is upper that man-machine interface (5) is connected to intelligent diagnostics supervisor (1), shows in real time diagnostic result.
2. a kind of generator excitation intelligent online monitoring diagnosis device according to claim 1, is characterized in that: two control channels of described Online Monitoring Control device (2) and excitation controller (6) are connected by optical fiber or Ethernet or CAN bus.
3. a kind of generator excitation intelligent online monitoring diagnosis device according to claim 1, is characterized in that: described intelligent diagnostics supervisor (1) is connected by Ethernet with Online Monitoring Control device (2).
4. a kind of generator excitation intelligent online monitoring diagnosis device according to claim 1, is characterized in that: described Online Monitoring Control device (2) possesses the multiple communication interfaces such as optical fiber, Ethernet and CAN bus, and compatible to IEC 61850 agreements.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420418424.5U CN204009010U (en) | 2014-07-28 | 2014-07-28 | A kind of generator excitation intelligent online monitoring diagnosis device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420418424.5U CN204009010U (en) | 2014-07-28 | 2014-07-28 | A kind of generator excitation intelligent online monitoring diagnosis device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104503330A (en) * | 2014-12-19 | 2015-04-08 | 上海发电设备成套设计研究院 | Power generator excitation system data collecting instrument based on ARM (advanced RISC machine) |
| CN106338689A (en) * | 2016-08-26 | 2017-01-18 | 国电南瑞科技股份有限公司 | Self-check method for running state of synchronous motor excitation system |
| CN106444509A (en) * | 2016-10-20 | 2017-02-22 | 重庆赛能软件技术有限公司 | Integrated monitoring method for power generation state of generator |
| CN110346722A (en) * | 2019-07-04 | 2019-10-18 | 国电南瑞科技股份有限公司 | A kind of generator excited system on-line monitoring trouble-shooter |
| CN110514936A (en) * | 2019-09-17 | 2019-11-29 | 中国长江电力股份有限公司 | A kind of de-excitation resistance on-line monitoring and diagnostic method and system |
-
2014
- 2014-07-28 CN CN201420418424.5U patent/CN204009010U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104503330A (en) * | 2014-12-19 | 2015-04-08 | 上海发电设备成套设计研究院 | Power generator excitation system data collecting instrument based on ARM (advanced RISC machine) |
| CN106338689A (en) * | 2016-08-26 | 2017-01-18 | 国电南瑞科技股份有限公司 | Self-check method for running state of synchronous motor excitation system |
| CN106338689B (en) * | 2016-08-26 | 2018-11-30 | 国电南瑞科技股份有限公司 | A kind of synchronous motor excitation system operating status self checking method |
| CN106444509A (en) * | 2016-10-20 | 2017-02-22 | 重庆赛能软件技术有限公司 | Integrated monitoring method for power generation state of generator |
| CN110346722A (en) * | 2019-07-04 | 2019-10-18 | 国电南瑞科技股份有限公司 | A kind of generator excited system on-line monitoring trouble-shooter |
| CN110514936A (en) * | 2019-09-17 | 2019-11-29 | 中国长江电力股份有限公司 | A kind of de-excitation resistance on-line monitoring and diagnostic method and system |
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Effective date of registration: 20221221 Address after: 430070 4th floor, Beigang Village Industrial Park, No. 36, Shucheng Road, Hongshan District, Wuhan City, Hubei Province Patentee after: Three Gorges Zhikong Technology Co.,Ltd. Address before: 430070 No. 36 Bookstore Road, Hongshan District, Hubei, Wuhan Patentee before: THREE GORGES NENGSHIDA ELECTRIC Co.,Ltd. |
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Effective date of registration: 20230825 Address after: 430070 No. 36 Bookstore Road, Hongshan District, Hubei, Wuhan Patentee after: Nengshida Electric Co.,Ltd. Address before: 430070 4th floor, Beigang Village Industrial Park, No. 36, Shucheng Road, Hongshan District, Wuhan City, Hubei Province Patentee before: Three Gorges Zhikong Technology Co.,Ltd. |